Wiener, W. R., Welsh, R. L., & Blasch, B. B. (2010). Foundations of orientation and mobility: Volume 1: history and theory (3rd ed.). AFB Press.
Chicago Edition CitationWiener, William R., Richard L. Welsh, and Bruce B. Blasch. Foundations of Orientation and Mobility: Volume 1: History and Theory. 3rd ed. New York: AFB Press, 2010.
ציטוט MLAWiener, William R., et al. Foundations of Orientation and Mobility: Volume 1: History and Theory. 3rd ed. AFB Press, 2010.
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